
    * {
        padding: 0;
        margin: 0;
      }
      .box {
        height: 500px;
        width: 400px;
        margin: 200px auto;
      }
      .box h1 {
        text-align: center;
      }
      .box > div input {
        width: 400px;
        height: 50px;
        margin-top: 40px;
        border-radius: 10px;
        border: 1px solid black;
      }
      .box > div button {
        margin-top: 40px;
        width: 400px;
        height: 50px;
        background-color: skyblue;
        border: none;
      }
      .ts {
        display: none;
      }
      .mmts {
        display: none;
      }
      .active {
        display: block;
        color: red;
      }
